He has since apologised to the "beautiful city of Birmingham," and every single resident, saying he made a "terrible error" after relying on "other sources".

He has promised to take an advert out on a Birmingham newspaper and make a donation to one of the city's chairities.

The interview was roundly mocked on Twitter, under the hash tag #FoxNewsFacts.

@nikkidholliday summed up the mood on Twitter, saying: It's things like #foxnewsfacts that make me proud to be British, what a fantastic response.

Here are some of the best tweets:

Birmingham's one million plus population is actually 57% white and 26% Asian, 8% black and 4% mixed race. In the 2011 census, only 21% of the population identified themselves as muslim.

Emerson is a controversial figure in the US, having been accused of exaggerating the reality about Islamic extremists. He has written a number of books on the subject, including 'American Jihad: The Terrorists Living Among Us'.

But there was at least one person was impressed with Mr Emerson’s comments.

Commenting on his Investigative Project website, a viewer called Jo said: "I watched Steven Emerson....and it was great. He sheds light on the inner workings and closed camps of those who do NOT want to assimilate into their Host Country's Society."